High-level access is the tie-hash access via two packages: OS2::PrfDB and OS2::PrfDB::Sub. First one supports one argument, the name of the file to open, the second one the name of the file to open and so called Application name, or the primary key of the database.

One may substitute a handle for already opened ini-file instead of the file name (obtained via low-level access functions). In particular, 3 functions SystemIni(), UserIni(), and AnyIni() provide handles to the "systemish" databases. AniIni will read from both, and write into User database.

Retrieves data from the database given 2-part-key appnamekey. If key is undef, return the "\0" delimited list of keys, terminated by \0. If appname is undef, returns the list of possible appnames in the same form.

Return an integer handle associated with the system database. If val is 1, it is User database, if 2, System database, if 0, handle for "both" of them: the handle works for read from any one, and for write into User one.